Trouble connecting to a database

Trouble connecting to a database

I have just purchased Design Extender and I have just set up a database on my server but I am getting an error when I try and connect to it.I'm a designer as opposed to a programmer so could do with a little help as to where I am going wrong please.

where you are trying to connect to the mysql database on the remote server, the testing server settings should be set to use FTP to connect to the remote server, and make sure the URL prefix is a valid URL for your site.